Sec. 54.400  Terms and definitions.

    As used in this subpart, the following terms shall be defined as 
follows:
    (a) Qualifying low-income subscriber. A ``qualifying low-income 
subscriber'' is a subscriber who meets the low-income eligibility 
criteria established by the state commission, or, in states that do not 
provide state Lifeline support, a subscriber who participates in one of 
the following programs: Medicaid; food stamps; supplemental security 
income; federal public housing assistance; or Low-Income Home Energy 
Assistance Program.
    (b) Toll blocking. ``Toll blocking'' is a service provided by 
carriers that lets consumers elect not to allow the completion of 
outgoing toll calls from their telecommunications channel.
    (c) Toll control. ``Toll control'' is a service provided by carriers 
that allows consumers to specify a certain amount of toll usage that may 
be incurred on their telecommunications channel per month or per billing 
cycle.
    (d) Toll limitation. ``Toll limitation'' denotes both toll blocking 
and toll control.